Galvanic battery.



No. 664,362. Patented D80. l8, I900. E. L. SLOCUM. 6

GALVANIC BATTERY.

(Application filed Mar. 7, 1896.)

(No Model.)

INVENTDRI UNITED STATES PATENT OFFICE.

EASON L. SLOGUM, OF PAWTUCKET, RHODE ISLAND.

GALVANIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 664,362, dated December 18, 1900.

Application filed March 7, 1896. Serial No. 582,242. (No model.)

' To all whom it may concern.-

Be it known that I, EASON L. SLOOUM, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Galvanic Batteries, of which the following is a specification.

My invention consists in the improved construction of the quicksilver-wells of the jar and of the insulators for the positive electrodes, the quicksilver-wells being formed in the bottom of the jar, which is in all parts practically of uniform thickness, as hereinafter fully set forth.

In the accompanying drawings, Figure 1 represents a vertical section of a galvanic battery provided with myimprovements. Fig. 2 represents a top view of the same. Fig. 3 represents a horizontal section taken in the line 3 3 of Fig. 1. Fig. 4 represents an axial section of the insulator shown in Figs. 1 and 2. Fig. 5 represents the top view of an insulator having three bearing-points. represents an insulator having two bearingpoints.

In the drawings, A represents the jar; B, the carbon or negative electrode; 0, the central zinc or positive electrode, and G O the outer zinc or positive electrodes. y The negative electrode B is provided with the downwardly-extending portions a 0., provided interiorly with the ribs 19 b and is also provided with an annular flange 0, having perforations d d therein to receive the insulators D D for the outer positive electrodes, the said insulators being made of porcelain or glass and the said. flange being adapted to rest upon the top of the jar A. The bottom of the jar Ais provided with a central Well e for the quicksilver, which serves to amalgamate the positive electrode 0, and with the outer wells e e, which serve to hold the quicksilver for amalgamating the outer positive electrodes 0 C. The boundary edge f of the central well e is raised above the bottom of the outer Wells e e, which are arranged in the annular space 9 at the outer side of the boundary edge f of the central well 0, the said outer wells being formed by the elevation of the bottom of the jar at the intermediate points h h, the bottom of the jar being at all points of about uniform Fig. 6.

thickness. The glass of the jar A may be either blown or pressed to the desired form, a blown jar being represented in the drawings, the said jar having a contracted rim m made in circular form, whereas the body of the jar is preferably made in square form with rounded corners, as shown in Fig. 3.

The insulators D D for the outer positive electrodes and the insulator D for the central electrode are provided with the bearing points or ribs 7; 11, which serve to bear against the sides of the positive electrode, and with the intervening openings jj and also having the hollowed upper surface It, the said openings being adapted for the insertion of quicksilver to the well at the bottom of the electrode and for the ventilation of the battery, the jarA being filled with diluted sulfuric acid as the exciting fluid.

I claim as my invention- 1. In a galvanic battery, the combination of the negative electrode provided with an opening for an insulator, with an apertured insulator having a plurality of inwardly-extending bearing-points for contact with the sides of the positive electrode, and held in said opening in the negative electrode, and the positive electrode held in position by the bearing-points of the insulator, substantially as described.

2. In a galvanic battery, the combination of the negative electrode provided with a central opening adapted to receive an apertured insulator for a positive electrode, and with a perforated flange adapted to receive a plurality of apertured insulators for positive electrodes, with the insulators and the positive electrodes held in the central and outer insulators, and the jar provided integrally with separate wells for containing the quicksilver to amalgamate the positive electrodes, substantially as described.

3. A glass jar for galvanic batteries, provided at its bottom with central and outer wells for holding the quicksilver, the bottom of the jar in which the wells are formed being approximately of uniform thickness, and the sides of the wells formed by the inward curvature of the glass of the bottom, substantially as described. 7

4. A glass jar for galvanic batteries, prosided at its top with a contracted rini, and at its bottomwith the central Well and the annularly-arranged outer weilsfor holding the quicksilver, the bottom of the jar in which the Wells are formed being of approximately uniform thickness, and the sides of the Wells formed, by the upward and downward curvature of the glass of the bottom of the jar, substantially as described.

EASON L. sLooUM.

Witnesses:

' SOGRATES SCHOLFIELD,

HARRY J. GAMAN. 

